Edge stitching presser foot for sewing machines



March 20, 1951 F. VANADlA ET AL EDGE STITCHING PRESSER FOOT FOR SEWING MACHINES 2 Sheets-Sheet 1 Filed May 5, 1949 INVENTOR5 VANADIA CARMEN Rosz'r'ro FRANK AY'IUENEY March 20, 1951 F. VANADlA ET AL 2,545,980

EDGE STITCHING PRESSER FOOT FOR SEWING MACHINES Filed May 5, 1949 2 Sheets-Sheet 2 INVENTORS FRANK WMADIA CARMEN Ross'r 'ro Patented Mar. 20, 1951 OFFICE EDGE STITCHING PRESSER FOOT FOR- SEWING MACHINES Frank Vanadia and Carmen Rosetto, New York, N. Y.

Application May 5, 1949, Serial No. 91,452

12 Claims. 1

This invention relates to new and useful im provements in a sewing machine presser foot, and, more particularly, the aim is to provide a novel and valuable such presser foot incorporating marked improvements in simplicity of structure, reliability of operation, ruggedness of parts, and long life throughout, and which is readily attachable to a standard manually raisable member of a sewing machine, and which, in an improved manner, affords a variety of utilities, a very important one of which is a capacity for insuring the laying down of a line of stitching exceedingly close to the edge of a piece of fabric, such for instance, as an edge marked by a fold of said fabric piece.

A feature of the invention is a novel and valuable construction of and mounting for-the v presser foot, for movement of the latter relative to a shank element provided in substitution for the usual upstanding shank integral with the conventional presser foot.

A further feature of the invention is a novel and valuable combination comprising the new presser foot and a uniplanar gauge plate, variously movable in its own plane in unison with or differentially from any movement of. the new presser foot relative to said shank element.

Another feature of the invention is an improved resilient means for acting on the gauge plate to bias the same normally to a pro-determined disposition in a vertical plane.

Still a further object of the invention is the combination with a new presser foot of a novel thread-cutting attachment to be carried by the new assembly, and in such manner that a sharp portion of a cutting edge may be substantially instantaneously substituted for a previously dulled portion of said edge, all without removal of the cutting member from the presser foot.

Another object of the present invention proposes the provision of a novel means on the presser foot for holding the gauge plate in a raised inoperative position when it is desired to use the presser foot without the gauge plate.

It is a further object of the present invention to construct a presser foot which is simple and durable and which can be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a front perspective view of a now favored embodiment of the new presser foot of the invention, looking slightly down on the same.

Fig. 2 is a view similar to Fig. 1, but looking from the other side of the presser foot.

Fig. 3 is a vertical section taken on the line 3-3 of Fig. 1.

Fig. 4 is an enlarged fragmentary detail view, showing certain of the parts as seen in Fig. 3, with a spring-urged plunger illustrated in axial section.

Fig. 5 is a rear elevation, showing one form of the new thread cutter attachment.

Fig. 6 is a view similar to Fig. 5, but showing modified form of such attachment.

Fig. 7 is a top plan view of a piece of fabric folded over on itself, and showing a stitching effected relative to the line of fold of said fabric piece, with said stitching exceedingly close to said line of fold, in particular illustration of a principal utility of the presser foot of the present invention.

Fig. 8 is a cross sectional view similar to Fig. '3, but illustrating the presser foot provided with means for holding the gauge plate in a raised inoperative position when desired.

Fig. 9 is a perspective view similar to Fig. 1, but illustrating the presser foot provided with a modified means for holding the gauge plate in a raised inoperative position.

Fig. 10 is a front elevational View of Fig. 9, but with the bottom portion thereof broken away.

Fig. 11 is an enlarged horizontal sectional view taken on the line I Il l of Fig. 10.

Fig. 12 is a rear perspective view of the looking lever, per se.

Fig. 13 is a partial perspective view of the gauge plate and associated elements.

Referring to the drawings more in detail, the new presser foot assemblage is illustratively shown as including an upstanding presser foot shank II]. This shank or equivalent, ordinarily, or in most cases heretofore, has integrally carried the presser foot. In the present case, however, the presser foot is a foot I l pivotally mounted near the rear end thereof and near the lower end of said shank for rocking about a horizontal axis.

The thus hung foot II is elongate, is of about the usual width, but is bifurcated in a direction parallel to its length along a line slightly offset from the center line of such length, thereby to have the foot H present a wider presser finger I2 and a narrower but longer presser finger 14. The pin for pivotally mounting the presser foot H is indicated at [5. As will be seen from Figs. 1 and 2 the bottom curvatures of the fingers l2 and M are matchingly extended longitudinally of the presser foot.

In combination with this presser foot 1!, and between the two fingers thereof, as in the placement illustrated, there is also present a thin uniplanar vertical gauge plate It. This plate has a rear portion ll, which portion is substantially of rectangular shape but having a rounding li at its forward upper corner substantially matching a rotundity of a boss [8 formed on the lower end of the shank H], and which boss is pierced to take the pivot pin l5.

Near the forward endof said portion ll of the gauge plate It is agenerally vertically extended slot [9, thereby to provide a pin-and-slot connection between the gauge plate and the pivot pin 15, whereby the gauge plate is fioatingly coupled to the rockable presser foot.

Forward of a rearwardly facing shoulder or step-down 211' at the bottom of the gauge plate, the latter is shaped to present a frontal plate portion 2|.

The shank, from its top to its bottom, is bored, as at 22, and said shank, near its bottom, is vertically milled in a straight fore and aft direction to provide an aligned pair of narrow vertical slots 23, 23, for accommodation therein of the portions of the gauge plate It passing through said shank.

For normally holding the gauge plate 16 and in turn the presser foot H to have substantially a horizontal direction of longitudinal extension, there is in the bore 22 a plunger 24 having a flat bottom for resting on the flat upper surface of the gauge plate in the rear of its pivot pin 15.

This plunger or piston is topped by a reduced extension 25, with which is engaged the lower end of an expansile coil spring 26 held in place and given a predetermined normal tension by adjustment of a set-screw 21. The opposite end portions of the pivot pinl are journalled in a rearward extension 28 of the presser foot H, pref erably of U-shaped cross-section as illustrated and providing a trough-like cup.

The long thin slit separating-thepresser foot fingers l2 and [4, for allowing the layingdown of a top thread during a stitching operation is interrupted by a half-round aperture 25, formed in the wider and shorter finger M, for rise'and fall of the lower end of the needle therethrough.

A novel attachment for quick thread cutting is also carried by the shank of the presser foot, this attachment comprising a shaped carrier plate 30, mountable at the back of said shank, and swingably adjustable as thus mounted, by a screw 3| having its shank passed through a suitable aperture in said plate and then entered into a drilled and tapped recess in said'shank. The outer portion of said plate, which is here shown as roughly U-shaped, is forked to provide a slot 32 along which a thread to be cut may be passed. A cutter blade 33 having opposite its cutting edge 34 an open-ended slot 35, is mounted on the plate 30 by means of a screw 35, the shank of which passes through the slot 35 and into a tapped recess in the plate 39, the arrangement being such that from time to time a part of the length of the cutting edge 34 at the effective bottom of the slot 32 may be readily varied as such edge portion becomes dulled in use, and hence a single 4 sharpening of said edge 34 may serve for a very long period of time.

Referring to the modified cutter attachment illustrated in Fig. 6, in which view the parts outlined in dot and dash lines, and to which are applied reference numerals with primes added, correspond, respectively, to the parts to which have been applied the same reference numerals without primes. Here, a simplified form of cutter attachment is shown, the same comprising a single shaped plate 31' having downwardly extended from the top of its main portion an open-ended slot 38, this for taking the shank of a screw 39, which shank is also received in a drilled and tapped recess in the rear portion of the shank of the presser foot assembly Ill. Said plate 3'! has a generally upwardly and outwardly inclined extension 48 carrying atits upper margin a preferably curvilinearly extended cutting edge, such as indicated at 4|.

Adverting to Figs. 1-3, the shank of the presser foot assemblage near its top, and rearwardly projected therefrom, integrally carries a formation 42 constituting, pursuant to usual practice, a convenient means for participating in theattachment of the presser foot assemblage to the manually raisable member located adjacent the needle carrier, said formation, as here shown, hav ing a back wall 43 integral with a web 44 integral with the main body of the presser foot shank; said web 44 having an open-ended downwardly extending slot 45 for extension therethrough of the shank of a suitable attaching screw or the like.

In Fig; '7, a piece of fabric 45 is illustrated as having had applied thereto a stitching 4? exceedingly close to the line offold 48- of said fabric piece. Such a result, made possible by the presser foot of the present invention, has long been sought to be attained in a practicably simple presser foot structure, such as here shown. The gauge plate I6 may move up and down against the spring 25, in view of the pin-and.- slot connection l5l9, and thus cling close to the top of the fabric, but nevertheless is able to move up and down bodily as the fabric is passing under the presser foot. The presser foot itself, at the same time, is rockable about said pin 15. The presence of these parts, in the arrangement described, plus the relationship of the center of the half-round aperture 29 to the near side of the gauge plate l6, permits such stitching as that shown at 47 to be easily and rapidly and perfectly established, even with the sewing machine power-driven and operating at a very high rate of speed, since all that is required is to guide the fabric so that the line 41 thereof is held over against that side of the presser plate which is the near side thereof in Fig. 2.

The step-down 2G is very important, as with it present, in the normal operation of the sewing machine the bottom ofthe gauge plate l5 ahead of said step-down will never rise above the bottom surface of the main portion of the presser foot I l, and as a result the gauge plate is always effective to keep the line 4'! moving along its appointed rectilinear path of travel.

In the modification of the invention shown in Fig. 8, the construction of the presser foot is similar to that shown in Figs. 1 to 4, except for the provision of a means for holding the gauge plate I6 in a raised inoperative position'w-hen desired.

The holding means is characterized by a screw 5t which is threaded into the rear of the shank I0 of the presser foot assembly at an inclinationas clearly shown on the drawings. The outer end of the screw 56 is formed with an enlarged knurled head el by which the screw can be conveniently turned. An expansion spring 52 is coaxially wound on the shank of the screw 50 and operates between the shank I 9' and the enlarged head 5| so as to retain the screw 50 in any position into which it might beturned.

The plunger 2d of the gauge plate It is formed with a cutout 53 which is faced rearward and which has an upper inclined surface 54 extended parallel to the inner end of the screw 56. When the gauge plate I6 is in its completely lowered position shown in Fig. 8, the top end of the inclined surface 56 slightly overlaps the inner end of the opening into which the screw 50 is threaded so that when the screw St is turned invvard, its inner end will catch on the surface 54. As inward turning of the screw 50 is continued the inclined surface 54 will ride over the inner end of the screw causing the gauge plate It and the plunger 24 to be raised to an inoperative position against the action of the spring 25. In its completely raised inoperative position, the bottoirl edge of the gauge plate 16 will be flush with or raised slightly above the bottom face of the presser foot II.

In other respects this form of the invention is similar to that shownin Fig. l to 4 and like reference numerals identify like parts in each of the several views.

In the further modified form of the invention shown in Figs. 9 to 13, the construction of the presser foot assembly is again similar to that shown in Figs. 1 to 4, except that it is provided with a different means for holding the gauge plate IS in a raised inoperative position.

This further modification is characterized by the fact that the gauge plate [6 is secured to the side of a block 66 by several rivets 6|. The block 69'is disposed for vertical sliding movement in a cutout 62 which opens to the front face of the shank It, as clearly shown in Figs. 9 to 11. The top end of the block 68 is provided with the plunger 24" which is to be engaged by the spring 26, see Figs. 10 and 13. Extending from the block 60 and beyond the front face of the shank 10" there is a' projection 63. Projecting laterally from one side of theshank 19" there is a lug 64 upon which a locking lever 65 is pivotally mounted by means of screw 66. The inner side of the locking lever 65 is formed with a lip 61 which lies beneath the projection 63 as clearly illustrated in Figs. 9 and 10. Extending rearward from the top edge of the locking lever 65 there is a lug 68 which limits movement of the locking lever to operative and inoperative positions. When the locking lever 65 is in the inoperative position shown in Fig. 9 the lug 68 abuts the side of the shank l0" and when the locking lever is in the operative position shown in. Fig. 10 the lug 68 rests on the top face of the lug 64. r

The lug 64 outward of the screw 66 is formed with a hollow 69, see Fig. 11, in which a ball 10 is located. A spring ll is also positioned within the hollow 69 and operates between the ball 70 and the back wall of the hollow 69 for urging the ball"forward. When the locking lever 65 is in the inoperative positionshown in Fig. 9, an edge .portion of the locking lever 65.overlies the ball 10 and retains it against being discharged from the hollow 69 by the spring H.

At one point, the back face of the locking lever 65 is formed with a recess 12 into whichtheball 10 is engaged when the locking lever is in the operative position shown in Fig. 11 so as to hold the locking lever in that pivoted position. The locking lever 65 is further formed with an inclined guide surface 13, see Fig. 12, for guiding the ball 10 into the recess 12 as the looking lever 65 is pivoted from the inoperative position shown in Fig. 9 to the operative position shown in Figs. 10 and 11. In the inoperative position the bottom edge of the gauge plate I6 is flush with the bottom face of the pressure foot II.

In assemblying the pressure foot shown in Fig. 9 to 13, the gauge plate 16 with the attached block 69 is slipped into position in the open front of the cutout 62 prior to the attachment of the presser foot II by means of the pin I5. In other respects the form of the invention shown in Figs. 9 to 13 is also similar to that shown in Figs. 1 to 4 and like parts are identified by the same reference numeral.

While we have illustrated and described the preferred embodiments of our invention, it is to be understood that we do not limit ourselves to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described our invention, what we claim as new, and desire to secure by United States Letters Patent is:

1. A sewing machine presser foot comprising a presser foot shank, an elongate presser foot pivotally mounted near its rear end on said shank near the lower end thereof, such mounting including a horizontal pivot pin extended at right angles to the length of the presser foot, said presser foot being bifurcated along its forward portion to provide a pair of forwardly extending presser fingers separated by an intervening slit, the presser foot having an aperture therethrough in vertical alignment with the path of up and down travel of the needle of the sewing machine, said aperture atits location constituting a localized widening of said slit, and a uniplanar vertically disposed gaugeplate slidable on said shank and extended forwardly into and along said slit to narrow the same, said gauge plate having a generally up and down extending slot through which said pivot pin extends, whereby said plate is free to be bodily movable in an up and down direction relative to said pin.

2. A sewing machine presser foot comprising a presser foot shank, an elongate presser foot pivotally mounted near its rear end on said shank near the lower end thereof, such mounting including a horizontal pivot pin extended at right angles to the length of the presser foot, said presser foot being bifurcated along its forward portion to provide a pair of forwardly ex tending presser fingers separate-:1 by an intervening slit, the presser foot having an aperture therethrough in vertical alignment with the path of up and down travel of the needle of the sewing machine, said aperture at its location constituting a localized widening of said slit, and a uniplanar vertically disposed gauge plate slidslotted, and said" plate having a, tail; portion extended into, said slot, said spring means. for imr parting a downward thrust effective on said, tail por on.

3.... A, sewing, machinepresser foot comprising a presser foot, shank, anelongate presser foot pivotally mounted near its rear end on' said shank near the lower end' thereof; such mount ing including a horizontal pivot pin extended at right angles to the length of the presser foot, said presser foot being bifurcated along its forwardportion to provide apair of forwardlyextending presser fingers separated by an intervening slit, the presser foot having'an aperture therethrough in, vertical alignment with the path of up and downtravel of the needle of the sewing machine, said. aperture at its location constituting alocalized widening'of said slit, and'a' uniplanar vertically disposed gauge plate slidable on said shank'and extended forwardly into and along said slit to narrow the same, said gauge plate having a generally up and down extending slot through which said pivot pin extends, whereby said plate is free to be bodily movable in an up and down direction relative to said pin, said shank being cavitated, and there being a downwardly thrusting spring means in such cavitation, said shank also being slotted, and said plate having a tail portion extended into said slot, said spring means for imparting a :1

downward thrust effective on said tail portion, said cavitation being a well-like chamber extending lengthwisely of said shank, and there being in saidchamber a plunger uponzthe-lower end of which said gauge plate is mounted, said spring: being an expansible coil spring directly acting downwardly on said plunger.

4'. A sewing machine presser foot comprising apresser foot shank, an elongate presser foot pivotally mounted nearits rear endon said-shank near the lower end thereof; such mounting including a horizontal pivot pin extended at right angles to the length of the presser foot said presser foot being bifurcated along its forward portion to provide a pair of forwardly extending presser fingers separated by an interveningslit, the presser foothaving an aperture therethrough in vertical alignment with the path of up and downtravel of the needle of the-sewing machine, said aperture at itslocation constituting a localized widening of said slit, and a uniplanar vertically disposed gauge plateslidable on said shank and extended. forwardly into. and along said slit to narrow the same, said gaugelplate having a generally up and down' extending slot through which said pivot pin extends, whereby said plate is free to be bodily movable in anup and down direction relative to said pin; said shank being cavitated, and there being a downwardly thrusting spring means in such cavitation, said shank also being slotted, andsaid plate having a tail portion extending into said' slot, said spring means for imparting a downward thrust effective on said tail portion, said cavitation being a well-like chamber extendinglengthwisely of said shank, and there being in said chamber a plunger upon the lower end of:which said gauge plate is mounted, said spring-being an expansile coil spring directly acting downwardly on said plunger, there being a member for reacting against theupper end of said spring and;for adjusting itstension, said member being a screw:threadedly'entered into the top of said shank.

5. A sewing machine; presser; foot; comprising 8 a presser foot shank, an elongate presserfoot pivotally mounted near its rear end" on said shank near the lower end thereof, such mounting including a horizontal pivot 'pin extended at right angles to the, length of the presser foot, said presser foot being bifurcated along its forward portion'to provide a pair of forwardly extending presser fingers separated by an intervening slit, the presser foot having an aperture therethrough in vertical alignment with the path of up and down travel of the-needle of the'sewing machine, said aperture at its location constituting a localized widening of said slit, and a uniplanar vertically disposed-gauge plate slidable on said shank and extended forwardly'into and along said slit to narrow the same, said gauge plate having a generally up and down extending slot through which said pivot pin-extends, whereby said plate is free to be bodily movable in an up and down direction relative to* said pin, said shank being cavitated, and there being a downwardly thrusting spring means in such cavitation, said shank also being slotted, and said plate having a tail portion extended into saidslot', said spring means for imparting a downward thrust eifective on said tail portion, said aperture being wholly inset in one of said fingers at the side thereof facing'said slit, and said slit beingof'a widthapproximately equal to the radius of said aperture;

GPA sewing machine presser.foot'comprisingra presser foot shank, an elongate presser. foottpivotally mounted near. its rear, enduoni'said; shank near the lower end thereof, such-mounting in:- cluding a horizontal pivotpinextended: at. right angles to the length ofr the: presser foot; said presser foot being, bifurcated;along it'siforward portion to provide apair of: forwardly extending presser fingers-separated by an intervening, slit, the presser foot having an: aperture therethroug-h in vertical alignment-with the path ofiup and downv travel of the needle of the, sewing machine, said aperture at itslocation constituting .a 100211? ized widening'of'saidslit ,landa' uniplarrar verticallyvdisposedgauge plateslidableon said shank andzextended forwardly, into and along. saidslit to. narrow-the. same, said gauge plateihaving a generally up and downextending slot through which said pivot pinextendswhereby said plate is freeto be bodily movable-in an up anddown direction relative to, saidpin, said shank-being cavitated, and there being a downwardly thrust"- ing spring means in such" cavitation-said shank also being slotted; and said'plate'havingatail portion extended into said slot, said spring-means for imparting a downwardthrust effective on said tail portion, saidaperturebeing wholly inset in one of said fingers at the side-thereof facingsaid slit, and'saidslit being of-a width'approx-imately equal'to the radius;of-said aperture, said gauge plate being of athickness amounting to a very small fraction of the widthorsaid slot.

7. A sewing maehinepresser foot comprising a presser foot shank, an elongate presser footpiv= otally mountednear its rear end on said shank near; the lower end thereof, such mounting'ineluding: a horizontal pivot pin extended,- at right angles to the length of the presser foot,v said presser foot being bifurcated along; its-forward portion to provide. a pair of forwardly extending presser; fingersseparat'ed by an intervening slit, the presser: foot-having an: aperture. therethrough in vertical alignment withzthe path of. up'and down travel of the needle *of the'sewing'machine, said. aperture: at its location. constituting. alocalized widening of said slit; and: a.= uniplanar ver generally up and down extending slot through Y which said pivot pin extends, whereby said plate is free to be bodily movabl in an up and down direction relative to said pin, said shank being cavitated, and there being a downwardly thrusting spring means in such cavitation, said shank also being slotted, and said plate having a tail portion extended into said slot, said spring means for imparting a downward thrust effective on said tail portion, said gauge plate having a rearwardly facing step-down at a point along its bottom and intermediate its ends.

, 8. A sewing machine presser foot comprising a presser foot shank, an elongate presser foot piv-' otally mounted near its rear end on said shank near the lower end thereof, such mounting in-.

eluding a horizontal pivot pin extended at right angles to the length of the presser foot said presser foot being bifurcated along its forward portion to provide a pair of forwardly extending presser fingers separated by an intervening slit, the presser foot having an aperture therethrough in vertical alignment with the path of up and down travel of the needle of the sewing machine,

said aperture at its location constituting a localdirection relative to said pin, said shank being cavitated, and there being a downwardl thr 'stalso being slotted, and said plate having a tail portion extended into said slot, said spring means for imparting a downward thrust effective on said tail portion, said cavitation being a well-like chamber extending lengthwisely of said shank,

and there being in said chamber a plunger uponthe lower end of which said gauge plate is mounted, said spring being an expansile coil spring directly acting downwardly on said plunger, there being a member for reacting against ing spring means in such cavitation. said shank the upper end of said spring and for adjusting,-

its ten ion, said member being a screw threadedly entered into the top of said shank, and means for holding said gauge plate in a ra sed inoperative position with relation to said presser foot.

9. A sewing machine presser foot comprising a presser foot shank, an elongate presser foot pivotally mounted near its rear end on said shank near the lower end thereof, such mounting including a horizontal pivot in extended at right angles to the lengthpf the presser foot said presser foot being bifurcated along its forward portion to provide a pair of forwardly extending presser finger se arated by an intervening slit, the presser foot having an aperture therethrough in vertical alignment with the path of u and down travel of the needle of the sewing machine, said aperture at its location constituting a localized widening of said slit, and a uniplanar vertically disposed gauge plate slidable on said shank and extended forwardly into and along said slit to narrow the same, said gau e plate having a generally up and down extending slot through which said pivot pin extends, whereby said plate is free to be bodily movable in an up and down direction relative to said pin, said shank being cavitated, and there being a downwardly thrustingspring means in such cavitation, said shank also being slotted, and said plate having a tail portion extended into said slot, said spring means for imparting a downward thrust effective on said tail portion, said cavitation being a well-like chamber extending lengthwisely of said shank,

and there being in said chamber a plunger upon end of said spring and for adjusting its tension,

said member being a screw threadedly entered into the top of said shank, and means for holding said gauge plate in a raised inoperative position with relation to said presser foot, said holding means comprising a screw threaded into the presser foot shank at an inclination, said plunger being formed with a cutout having an inclined surface arranged parallel to the inner end of said screw to be engaged by the inner end of" said screw when turned inward for camming said plunger and the attached gauge plate upward to an inoperative position. v 4

10. A sewing machinepresser foot comprising a presser foot, shank, an elongate presser foot pivotally mounted near its rear end on said shank near thelower end thereof, such mounting including a horizontal pivot pin extended at right angles to the. length of ,the presser foot said presser foot being bifurcated along its forward portion to provide a pair of forwardly extending presser fingers separated by an intervening slit, the presser foot having an aperture therethrou-gh in vertical alignment with the path of up and down travel of the needle of the sewing machine, said aperture at its location constituting a local ized widening of saidslit, and a uniplanar vertically disposed gauge plate slidable on said shank and extended forwardly into and along said slit to narrow the same, said gauge plate having a generally up and down extending slot through which said pivot pin extends, whereby said plate is free to be bodily movable in an up and down direction relative to said pin, said shank being cavitated, and there being a downwardly thrusting spring m ans in such cavitation, said shank also being slotted, and said plate having a tail portion extended into said slot, said spring means for imparting a downward thrust effective on said tail portion, said cavitation being a well-like chamber extending lengthwisely of said shank, and there being in said chamber a, plunger upon the lower end of which said gauge plate is mounted. said spring being an expansible coil spring directly acting downwardly on said plunger, there being a member for reacting against the upper end of said spring and for adjusting its tension, said member being a screw threadedly entered into the top of said shank, and means for holding said gauge plate in a raised inoperative position with relation to said presser foot, said holdin means comprising a screw threaded into the presser foot shank at an inclination, said plunger being formed with a cutout having an inclined surface arranged parallel to the inner end of said screw to be engaged by the inner end of said screw when turned inward for camming said plunger and the attached gauge plate upward to an inoperative position, and means for holding said screw in a desired adjusted rotative position.

11. A sewing machine presser foot comprising a presser foot shank, an elongate presser foot pivotally mounted near its rear end on said shank in vertical alignment with the path of up and down travel of the needle of the sewing machine, said aperture at its location constituting a local- .ized widening of said slit, and a nniplanar vertically disposed gauge plate slidable on said -,sha:nk and'extended forwardly intoand along said-slit 2130 narrow the same, said gauge plate having a generally :up and down extending slot through which said pivot :pin extends, whereby said plate is tree to be bodily movablein an up and down direction relative to said pin, said shank-being eav-itated, and there being a down- ,ward-ly thrusting spring-means in such cavitation, said shank also being slotted, and said plate having a tail portion-extended into said slot, said spring means for imparting a downward thrust efiective on said tail portion,. said cavitation being a well-like chamber extending lengthwisely of said shank, and there being in said chamber a plunger upon the lower .end of which said gauge plate is mounted, said spring being an expansible coil spring directly acting downwardly on said plunger, there being .a member for reacting against the upper end .of said springand ior adjusting its tension, said member being a screw threadedly entered into the top of said shank, and means for holding said gauge plate in a raised inoperativeposition with relation .to said presser 'foot, said holding means comprising a block forming part of said plungerand to which said gauge plate is attached, a projection extending from said block beyond the front face of said shank, a locking lever pivotally mounted on-said shank and having a lip underlying the projection, and means forl-holding-said locking lever in a pivoted positionin which theblock and attached gauge plate will .be in a raised inoperative position.

12. A sewing machinepresser :footcomprisinga presser foot shank, an elongate presser foot pivotally mounted :near its rear end onsaidshank nearthe lower end thereof, such mounting inpresser- (fingers separated :by an. intervening slit, the presser ,foot having anzaperture therethrough in vertical alignment with the path of -up and down travel of the needle of the sewing machine,

said aperture at itsulocation constitutinga localalso being slotted,and said plate having a tail portion extended intosaidslot, said spring means fonimpar-ting a downwardthrust "effective on "said tail portion, said cavitation being a well-like chamber extending-lengthwisely of said shank, and there being in said chamber a plungerupon the lower end of which said gauge plate is mounted, said spring being an expansile coil spring direct-1y acting downwardly on saidrplunger, there being a member fol-reacting against 'the'upper end of said spring and for adjusting itsitension, said .member being :a screw threadedly entered into-thetop ofsaid shank, and meansgfor holding said :gaugeplate in :a raised inoperativeposition with relation-to saidpresser rfoot, said-holding means comprising a block ':forming part of said plunger and to which saidgauge plate is attached, aprojection extending from said block-beyond the front face of said shank, a locking lever pivotally mounted on said shank and having a lip underlying "the projection, and means .for holding said locking lever in a pivoted position in which the block andattached gauge plate will be in a raised inoperative position, said holding means comprising a-spring pressed ball mounted on said shank for engaging a complementary recess iormed'insa'id locking lever.

FRANK VANADIA.

CARMEN ROSET'I'O.

file of this patent:

UNITED STATES PATENTS Name Date Cosentino Sept. 11, 1945 Number 

